I've used Jacob's Energy Pack. VERU nice system. The only multispark that senses the voltage required to jump one spark, and raises it's level to make sure the spark is good. I used it when I ran NOS. I havent had one in years. But I would rate it #1. MSD is second. I've never had an issue with any MSD6 series. I currently own 3, and installed close to 15 I think. The MSD distributors are nice because they will never wear out, and it's easy to tailer the ignition curve. Thumbs down for distribuotr cost tho. MP/stock distributors work fine. Stock, street, race, whatever. All they are is a mechanical curve, and an ignition pickup. I also like the tunable vaccum advance. I always run them if possible except on race engines. I run a single point is two spots. My old plow truck, and my running stand. The truck had to start regardless of weather or conditions. And points will if set right. They also can run on under 9 volts easy, and it's one wire...hence the running stand bit. They have no business in a modern performance engine. No more so than a 6 volt battery system, or a single master cylinder for braking. If your stock old car has them, great. but on one that doesnt need to stay stock, it's one of the single best mods one can make. I've never run pertronix stuff. but I have heard of issues. I also wont ever use or recommend accel for anything except cheap wires. Not good ones, but cheap ones...lol.
